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相关概念视频

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

746
Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
746
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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相关实验视频

Updated: Jan 7, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies

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生物标志物 生物标志物

Fatemeh Tabassi Mofrad1, John Gallacher2

  • 1University of Oxford, Oxford, United Kingdom.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
概括
此摘要是机器生成的。

大脑衰老涉及灰质缩和体积增加在特定的皮下区域,如尾和尾,表明炎症可能在认知衰退中发挥作用.

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科学领域:

  • 神经成像是一种神经成像.
  • 神经科学是一个神经科学.
  • 衰老研究研究 衰老研究

背景情况:

  • 与年龄相关的认知衰退会影响独立性和寿命.
  • 皮下大脑结构与认知能力的恶化有关.
  • 需要对与年龄相关的结构性大脑变化进行全面的记录.

研究的目的:

  • 为了绘制下皮层灰质中与年龄相关的体积变化.
  • 为了研究年龄和皮层下大脑体积之间的关系.

主要方法:

  • 利用了来自46111名健康个体的T1加权结构性脑部扫描.
  • 参与者分为中年 (44-60) 和老年 (61-83) 组.
  • 采用路径分析来检查与年龄相关的皮质下体积变化,并进行模型适应调整.

主要成果:

  • 年龄与右/左骨,骨和左骨的体积增加正相关.
  • 年龄与大脑干,左丘脑,右/左桃体和海马体体积的减少负相关.
  • 观察到老年人皮下区域的体积差异变化.

结论:

  • 与年龄相关的结构性大脑变化包括灰质缩和皮层下区域体积增加.
  • 在Caudate,Pallidum和Putamen中增加的体积表明与年龄相关的大脑炎症.
  • 这些炎症变化可能会在神经退行性疾病的发病前发生.